Patents Assigned to Abrasives International N.V.
  • Process for making an abrasive grinding wheel
    Patent number: 4369046
    Abstract: Co-molded articles such as abrasive grinding wheel structures having a polyimide resin-bonded phase and a metal-bonded phase are provided. A process also is provided for co-molding such structures by the simultaneous application of heat and pressure to an abrasive-containing rim of polyimide resin and a core of metal powder.
    Type: Grant
    Filed: October 10, 1980
    Date of Patent: January 18, 1983
    Assignee: Abrasives International N.V.
    Inventors: Dieter K. Bruschek, Richard M. Levering
  • Abrasive articles prepared from crosslinked aromatic polyimides
    Patent number: 4142870
    Abstract: An abrasive article comprising a filler distributed in a matrix or binder of polyimide polymeric material of a crosslinked combination of two linear aromatic polyimide polymers. These articles exhibit a retention of physical properties at high temperatures.
    Type: Grant
    Filed: August 15, 1977
    Date of Patent: March 6, 1979
    Assignee: Abrasives International N.V.
    Inventor: Elwyn R. Lovejoy